ASTROSAT CZTI

Data Quality Report

Orbit 57586

Creation date: 2026-05-20T21:15:24.286518
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A14_070T08_9000006576_57586cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57586cztM0_level2_quad_clean.evt
Size (bytes)539,187,840103,737,600
Size514.2 MB 98.9 MB
Events in quadrant A3,222,349697,863
Events in quadrant B4,216,832730,027
Events in quadrant C4,375,215659,405
Events in quadrant D7,576,289544,543

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152411
B0176961
C0183281
D0275341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7317841.148011%
B73173184.346043%
C73162323.171132%
D7317119116.277163%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7332 7318 15 15 0.20% 0.20%
B 7332 7318 162 162 2.21% 2.21%
C 7331 7317 160 160 2.18% 2.19%
D 7332 7318 1173 1173 16.00% 16.03%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 7 160 86624 438.82 793 772 195.6
A 4 249 44908 225.6 793 772 195.6
A 3 14 15953 77.6 793 772 195.6
B 2 249 815211 4957.52 771 741 164.3
B 10 247 78900 475.74 771 741 164.3
B 5 185 65664 395.17 771 741 164.3
C 15 224 1003167 4854.72 760 753 206.5
C 12 254 150138 723.48 760 753 206.5
C 14 254 112833 542.81 760 753 206.5
D 15 142 1991200 9775.18 715 680 203.6
D 8 240 1821481 8941.71 715 680 203.6
D 2 249 222725 1090.43 715 680 203.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter